Dear Monks,
I have a question about the Schwartzian transform on multidimensional arrays (at least, I think that's what I need). Here's a typical array:
@AoA = (
[ "n1", "34" ],
[ "n3", "14" ],
[ "n2", "1" ],
[ "n4", "5" ],
);
I want these sorted numerically on the second dimension, the numerical values. What I'm looking for is:
@sorted = (
[ "n2", "1" ],
[ "n4", "5" ],
[ "n3", "14" ],
[ "n1", "34" ],
);
Naively, I figured something like the following would work:
@sorted = map { [ $_[0], $_[1] ] } sort { $a->[1] <=> $b->[1] } map {
+[ $_[0], $_[1] ] } @AoA;
But I seem to get nothing but emptiness... so how is this done
the right way?
Thanks, any replies greatly appreciated.
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